chore(index): update copyright year

Author: gkalpak

src/index.html

@@ -405,7 +405,7 @@ <h2>ng-conf</h2>
   <footer class="footer">
     <div class="container">
       <p class="pull-right"><a href="#" target="_self">Back to top</a></p>
-      <p>Super-powered by Google  ©2010-2016</p>
+      <p>Super-powered by Google ©2010-2017</p>
       <p>Code licensed under the
         <a href="https://github.com/angular/angular.js/blob/master/LICENSE" target="_blank">The
           MIT License</a>. Documentation licensed under <a